Digital BW, The Print

I've just spent the better part of an hour searching the forum for
information on whether or not using cleaning cartridges is necessary
when switching from UC to UT7 on the 7600 (I just picked up a used one
on ebay :-) happy, happy!). Obviously if I can avoid spending $100+
for a collection of cartridges I will never use again, I'm all for it.

I've come to the conclusion that in the last couple of years there has
been no general agreement on this issue and am wondering what the
current consensus is, or if opinions are still divided.

Any thoughts, advice, etc. welcome, especially considering that aside
from my 1280, I'm entirely new to the realm of the wide printers. 
And, from what I've read so far on this list, they are an altogether
different class of beast.

Thanks in advance,

Eric
www.ericashworth.net

My opinion is to err on the side of caution and flush.

Logical enough.  Does anyone know if the chemical makeup of UC and  
UT7 are reactive? If not, it would seem there wouldn't be any  
problem. But, like I said, caution is a logical enough argument.

Eric,
www.ericashworth.net


On Aug 23, 2005, at 4:43 PM, dfaprinting wrote:

> My opinion is to err on the side of caution and flush.

You have to flush. There's not much discussion because there's no 
question. You have to flush. MIS doesn't write that documentation for 
their health - they write it for yours.

The 7600 doesn't use a valve that will prevent backflow into the carts. 
If you just pull the UC color ink carts and replace them with the UT7 
carts, the UC ink in the ink lines will flow back into your UT7 carts 
and contaminate them. This is, as Martha would say, a very bad thing.

How do I know this? I'm using PiezoTones in my 7600. After a while I 
decided I was using one "flavor" for 90% of my work, so I dropped the 
other one when it ran out. I rinsed out the three carts with cleaning 
fluid, then filled them with cleaning fluid and reinstalled. That is, it 
was clean and clear when I installed them. When they ran out the second 
time (that many head cleanings - most of them automatic), for some 
reason I pulled what little was left, expecting it to be clean. It 
wasn't - it was the same color as the ink in the lines. As I said, there 
is no backflow preventer.

For the record, those three lines have had about five carts (110mm) 
worth of cleaning fluid through them now, and I can still read the 
nozzle checks for one of the channels. Ink is still clearly visible in 
that line.

You have to flush.
--
Bruce Watson


brigsby707 wrote:

> I've just spent the better part of an hour searching the forum for
> information on whether or not using cleaning cartridges is necessary
> when switching from UC to UT7 on the 7600 (I just picked up a used one
> on ebay :-) happy, happy!). Obviously if I can avoid spending $100+
> for a collection of cartridges I will never use again, I'm all for it.
>
> I've come to the conclusion that in the last couple of years there has
> been no general agreement on this issue and am wondering what the
> current consensus is, or if opinions are still divided.
>
> Any thoughts, advice, etc. welcome, especially considering that aside
> from my 1280, I'm entirely new to the realm of the wide printers.
> And, from what I've read so far on this list, they are an altogether
> different class of beast.
>
> Thanks in advance,
>
> Eric
> www.ericashworth.net
>
>

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, hogarth@s... 
wrote:
> 
> For the record, those three lines have had about five carts (110mm) 
> worth of cleaning fluid through them now, and I can still read the 
> nozzle checks for one of the channels. Ink is still clearly visible 
in 
> that line.
> 

Ummm.. WOW! I can get my 9500 very clean with minimal effort. Have 
you purged the lines, and then load with the cleaning fluid? There 
should be a purge procedure in the users manual, supposed to do this 
before transporting the machine. Sequence should be as follows (for a 
good cleaning):

Purge old ink. Install fresh cleaning carts, and let the printer do 
an initial charge, a couple more head cleanings for good measure, 
then another purge to remove the cleaning fluid. Install ink, let it 
do another initial charge, and print. If you really want to be 
thorough, then remove and clean all the dampers, or simply replace 
them, that is one of the most likely places that a little ink will 
hide, and hopefully the first point of failure if you do have an ink 
mixing problem.

You guys might find this interesting.  I located two different sets  
of instructions on MIS's website.  The first,

http://inksupply.info/index.php? 
_a=knowledgebase&_j=questiondetails&_i=95

supports the flushing liquid process.  However, this page,

http://www.inksupply.com/7600inkchange.cfm

pretty much states the opposite. !? Is this for any MIS inks as long  
as you're replacing OEM inks? It seems that is exactly what they're  
saying.  I located these instruction from this page,

http://www.inksupply.com/purging.cfm

the link was under the "quick ink change procedure for the Epson 4000  
and 7600" heading, where they state that these procedures are new as  
of March 2005.  So maybe it isn't necessary after all?

Eric
www.ericashworth.net


On Aug 23, 2005, at 5:52 PM, dfaprinting wrote:

> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, hogarth@s...
> wrote:
> >
> > For the record, those three lines have had about five carts (110mm)
> > worth of cleaning fluid through them now, and I can still read the
> > nozzle checks for one of the channels. Ink is still clearly visible
> in
> > that line.
> >
>
> Ummm.. WOW! I can get my 9500 very clean with minimal effort. Have
> you purged the lines, and then load with the cleaning fluid? There
> should be a purge procedure in the users manual, supposed to do this
> before transporting the machine. Sequence should be as follows (for a
> good cleaning):
>
> Purge old ink. Install fresh cleaning carts, and let the printer do
> an initial charge, a couple more head cleanings for good measure,
> then another purge to remove the cleaning fluid. Install ink, let it
> do another initial charge, and print. If you really want to be
> thorough, then remove and clean all the dampers, or simply replace
> them, that is one of the most likely places that a little ink will
> hide, and hopefully the first point of failure if you do have an ink
> mixing problem.


[Non-text portions of this message have been removed]

>http://inksupply.info/index.php? 
>_a=knowledgebase&_j=questiondetails&_i=95
>
>supports the flushing liquid process.

Correct this is for B&W inksets

However, this page,
>
>http://www.inksupply.com/7600inkchange.cfm
>
>pretty much states the opposite. !? Is this for any MIS inks
as long  
>as you're replacing OEM inks? It seems that is exactly what
they're  
>saying.

No this is for their UC equivalent inks


Regards, Walt

http://www.kauaiphotos.biz

That is very good advice.


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "dfaprinting"
<dfaprinting@y...> wrote:

> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, hogarth@s... 
> wrote:
> > 
> > For the record, those three lines have had about five carts (110mm) 
> > worth of cleaning fluid through them now, and I can still read the 
> > nozzle checks for one of the channels. Ink is still clearly visible 
> in 
> > that line.
> > 
> 
> Ummm.. WOW! I can get my 9500 very clean with minimal effort. Have 
> you purged the lines, and then load with the cleaning fluid? There 
> should be a purge procedure in the users manual, supposed to do this 
> before transporting the machine. Sequence should be as follows (for a 
> good cleaning):
> 
> Purge old ink. Install fresh cleaning carts, and let the printer do 
> an initial charge, a couple more head cleanings for good measure, 
> then another purge to remove the cleaning fluid. Install ink, let it 
> do another initial charge, and print. If you really want to be 
> thorough, then remove and clean all the dampers, or simply replace 
> them, that is one of the most likely places that a little ink will 
> hide, and hopefully the first point of failure if you do have an ink 
> mixing problem.

Eric;

I switched mine over without flushing and had no problems whatsoever

Steve Karafyllakis


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "brigsby707" 
<brigsby707@c...> wrote:
> I've just spent the better part of an hour searching the forum for
> information on whether or not using cleaning cartridges is 
necessary
> when switching from UC to UT7 on the 7600 (I just picked up a used 
one
> on ebay :-) happy, happy!). Obviously if I can avoid spending $100+
> for a collection of cartridges I will never use again, I'm all for 
it.
> 
> I've come to the conclusion that in the last couple of years there 
has
> been no general agreement on this issue and am wondering what the
> current consensus is, or if opinions are still divided.
> 
> Any thoughts, advice, etc. welcome, especially considering that 
aside
> from my 1280, I'm entirely new to the realm of the wide printers. 
> And, from what I've read so far on this list, they are an 
altogether

> different class of beast.
> 
> Thanks in advance,
> 
> Eric
> www.ericashworth.net

Hi Steven,

After reading quite a bit more on MIS's web site, I'm pretty  
convinced that there shouldn't be any problem as the flushing liquid  
used to remove the UC inks is the base that is used to dilute the  
UT-7 inks.  Therefore, chemically, they are compatible and would not  
react with each other in order to produce clogging.  I think the only  
"risk" is that you might get some backflow or mixing resulting in  
color discrepancies.  And, from looking over the two sets of  
instructions again, while it states that the flushing process works  
well when switching to one of the BW inksets, the other process no  
where states that it is only for color.

Clearly, some people have had problems whereas you were successful at  
it.  Also, I know that Paul Roark did so as well when he first set up  
his 7600.

All that being said, depending on the condition of the machine, I may  
end up running some flushing liquid through it and let it sit for a  
few days to thoroughly clean it prior to getting started with it.

Thanks for the input,

Eric,
www.ericashworth.net

On Aug 24, 2005, at 7:58 AM, Steven Karafyllakis wrote:

> Eric;
>
> I switched mine over without flushing and had no problems whatsoever
>
> Steve Karafyllakis